gcc/profile.h

   1 /* Header file for minimum-cost maximal flow routines used to smooth basic
   2    block and edge frequency counts.
   3    Copyright (C) 2008
   4    Free Software Foundation, Inc.
   5    Contributed by Paul Yuan (yingbo.com@gmail.com)
   6        and Vinodha Ramasamy (vinodha@google.com).
   7
   8 This file is part of GCC.
   9 GCC is free software; you can redistribute it and/or modify it under
  10 the terms of the GNU General Public License as published by the Free
  11 Software Foundation; either version 3, or (at your option) any later
  12 version.
  13
  14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  17 for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 #ifndef PROFILE_H
  24 #define PROFILE_H
  25
  26 /* Additional information about edges. */
  27 struct edge_info
  28 {
  29   unsigned int count_valid:1;
  30
  31   /* Is on the spanning tree.  */
  32   unsigned int on_tree:1;
  33
  34   /* Pretend this edge does not exist (it is abnormal and we've
  35      inserted a fake to compensate).  */
  36   unsigned int ignore:1;
  37 };
  38
  39 #define EDGE_INFO(e)  ((struct edge_info *) (e)->aux)
  40
  41 /* Smoothes the initial assigned basic block and edge counts using
  42    a minimum cost flow algorithm. */
  43 extern void mcf_smooth_cfg (void);
  44
  45 extern gcov_type sum_edge_counts (VEC (edge, gc) *edges);
  46
  47 #endif /* PROFILE_H */